Home / 136,300.55-188,091.64-85,341.38

Finding the Fourth Proportional to 136,300.55, 188,091.64 and 85,341.38

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Solution

The fourth proportional to 136,300.55, 188,091.64 and 85,341.38 is: 117,769.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,300.55 : 188,091.64 = 85,341.38 : x
  2. Step 2: Convert to fraction form
    136,300.55/188,091.64 = 85,341.38/x
  3. Step 3: Cross multiply
    136,300.55x = 188,091.64 × 85,341.38
  4. Step 4: Simplify right side
    136,300.55x = 16,051,998,756.90
  5. Step 5: Solve for x
    x = 16,051,998,756.90/136,300.55
  6. Step 6: Final answer
    x = 117,769.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.